My teacher gave his class two quizzes 80% of the class pass the first quiz but only 60% of the class pass both quizzes what percent of those who passed the first quiz also pass the second quiz

Rachel is studying the population of a particular bird species in a national park. she observes every 10th bird of that species that she can find in the park. her conclusion is that the birds living in the park who belong to that species generally feed on insects. rachel's sample is . based on the sample she picked, rachel's generalization is